Conveyer roll



A. P. STRONG CONVEYER ROLL Filed Dec. 29, 1924 May l5, 1928.

Patented May 15,

i UNITED STATES A y 1,669,952 PATENT OFFICE.

ARTHUR P. STRONG, 0F MISHAWAKA, ASSIGNOB T0 DODGE MANUFACTUR- ING CORPORATION, A CORPORATION OFDELAWABE.

coNvEYEn non..

Application filed December 29, 1924. Serial N9. 758,496.

This invention relates to belt conveyer rolls, and among other objects aims to provide a readily and economically manufactured roll which is capable of giving long service under trying conditions with -little attention and low operating expense.

The invention may be understood by reference to one illustrative embodiment shown in the accompanying drawings, in which:

ig. 1 is a sectional elevation of the roll; an

Fig. 2 is a section on 1ine2-2 of Fig. 1;

As belt conveyers o f different capacities vary in width, it is usually necessary for the manufacturer vto maintain a stock of return rolls, or return roll parts, of'various dimensions proportionate to each conveyer width, resulting in an undesirably `large inventory. The present invention, While applicable to the load-supporting conveyer rolls, aims particularly to improve the return rolls, so that they may be expeditiously made in any desired length, without maintaining a large stock of roll parts of different dimensions. By the invention, satisfactory service is secured from conveyer rolls of considerable length', which as Ordi- A:so

narily constructed may have bearing trouble. Inasmuch as return rolls are in contact'with the load-bearing face of the conveyer belt, anything retarding or stopping rotation of the rolls will cause very serious wearing of the belt as well as of the rims of the rolls. Hence it is desirable to take extraordinary precautions, as hereinafter described, to insure free running of the rolls for long periods of time.V

It is to be understood that the illustrative form shown in the drawings is simply a preferred embodimentof the invention; and that in the following explanation of that specific form, the described details of structure and organization are merely exemplary.

Referring to Fig. l, there is shown a return roll 3 extending between and supported at opposite ends by brackets 4 secured to channels 5 which depend from the decking G.. On the decking the load-supporting belt conveyer rolls are secured (not shown).

The return roll 3 comprises generally a cylindrical body over which the lower run of the conveyer belt 7 travels, a pair of roll drical body advantageously is formed from a section of commercial seamless steel boiler tubing, cut to the length requisite for the particular conveyer with which the return roll is used. Within the tubing, the end members 8 are secured, for example by one or more rivets 10. Each end member may consist of an outer cylindrical part which is press-fitted Within the tube, and integral therewith an inner cylindrical housing or hub 11 for the bearings 12, herein tapered roller bearings, supported upon the axle 9. To adjust each set of bearings, a screwthreaded collar or nut 13 is provided which conveniently is locked in adjusted position by a cotter pin 14 passed through an annular flange 15 on the collar and extending between two of an annular series of lugs 16V projecting from the edge of the housing 11. VThe Hange 15 may have slots (not shown),

for a spanner Wrench.

To hold the bearings 12 properly spaced, each axle 9 may be enlarged or have annular shoulders as indicated at 17. At its out- `er end, each axle is flattened, as shown at 18,

For adequate lubrication of the bearings,

each hub 11 is considerably larger than the axle, thus providing a lubricant chamber 19, closed at one end by the adjusting collar 13 and at the other end by aj sealing disk 20 held between the outer race of the adjacent bearing and an annular inwardly extending fiange 2l of the hub. Each collar 13 may have a lubricant seal shown in the form of two annular grooves 22. Grease is fed to each chamber for instance by a grease gun (not shown), attached to the end of the grease conduit 23 conveniently ex' tending through a hole in the bracket 4 and screw-threaded to the axle, which has a longitudinal grease passage 24 terminating preferably immediately in front of the sealing disk 20. By the described arrangement grease may be forced against the disk 20, which serves as a baiile plate to direct the grease through the adjacent bearing, and thence into the chamber. Thus a highly desirable uniform cleaning of the bearings results each time the force feeder is used.

contour is used.

In the manufacture of the described roll, the end members 8 will usually be made and assembled with the bearings l2 and axles 9 to form standardized-units ready for insertion in a tube of any desired length. These end members may have a diameter slightly greater than the internal diameter of the tube so that the tube is stretched more or less during assembly. The units may be inserted independently without special care to insure alinement; yet, because of the arrangement of two alined bearings in each unit, bearing trouble will not develop even when commercial tubing of irregular The final step in the manufacture is the securing of the tube 3 to the end members, which prevents relative longitudinal movement. A

Obviously the present invention is not restricted to the particular embodiment thereof herein shown and described, nor is it necessary that all the features of theinvcntion be used conjointly; they may be employed advantageously 1n various com-l binations and sub-combinations as defined in the claims.

What is claimed is:

l. A belt conveyer roll comprising, 'in combination, a roll body; a bearing housing within the body, said housing providing a grease chamber; means permitting force feed of grease into said housing; an axle extending within the housing for supporting the roll; bearings interposed between the housing and axle; said axle formed between the bearings so as to prevent relative approach of the bearings; screw-threaded means sealing one end of the housing to adjust said bearings; and a late sealing the other end of the housing and) held in position to divert grease against the adjacent bearing.

2. A belt conveyer roll comprising, in combination, a roll body; a bearlng housing within the body, said housing providing a grease chamber; means permitting the force feed of grease into said housing; an axle extending within the housing for supportin the roll; anti-friction bearings interpose between the housing and axle; and a late held between the adjacent bearing an the housing to seal that end of the housing, and in position to divert grease through the adjacent bearing.

3. A belt conveyer roll comprising, in combination, a roll body; a pair of bearing housings within the body, each housing (providing a grease chamber; an axle exten ing within each housing for supporting the roll; tapered roller bearings interposed between each housing and its axle; each axle formed between the bearings so as to prevent relative movement of the bearings; screwthreaded means sealing oneend of the housing to adjust said bearings; and removable means sealing the other end of the housing.

4. A belt conveyer roll comprising, in combination, a roll body; bearings for the body; a housing enclosing the bearings and providing a lubricant chamber; an axle extending between the bearings and beyond the end of the roll, said axle provided with a longitudinal plassageway for grease; a baille plate sealing te end of the housing and diverting grease from the discharge end of the passageway to the adjacent bearin and means permitting connection of a lu ricant force feeder to the outer end of the axle.

5. A conve er roll comprising, in combination, a ro l body; a pair of bearin s on which the roll body may revolve; sai roll body havin a substantially cylindrical lubricant-holcing chamber in which the bearings are retained; means sealing one end of said chamber and constructed and arranged to adjust the bearings; and a plate sealing the other end of the chamber and held in place by the adjacent bearin In testimony whereof, I name to this specification.

ARTHUR P. STRONG.

gave signed my 

